Brown Girl in the Ring

In this "impressive debut" from award-winning speculative fiction author Nalo Hopkinson, a young woman must solve the tragic mystery surrounding her family and bargain with the gods to save her city and herself. ( The Washington Post )

The rich and privileged have fled the city, barricaded it behind roadblocks, and left it to crumble. The inner city has had to rediscover old ways--farming, barter, herb lore. But now the monied need a harvest of bodies, and so they prey upon the helpless of the streets. With nowhere to turn, a young woman must open herself to ancient truths, eternal powers, and the tragic mystery surrounding her mother and grandmother. She must bargain with gods, and give birth to new legends.

I was expecting something along the lines of Octavia Butler, but despite similar themes I felt the writing, plot, characters, etc., were pretty flat in comparison. It's a very short book, but I couldn't make myself finish it.